Question

The first four terms of a sequence are shown below.
9, 5, 1, -3

Which of the following functions best defines this sequence? (4 points)


f(1) = 9, f(n + 1) = f(n) - 4; for n ≥ 1
f(1) = 9, f(n + 1) = f(n) + 4; for n ≥ 1
f(1) = 9, f(n + 1) = f(n) - 5; for n ≥ 1
f(1) = 9, f(n + 1) = f(n) + 5; for n ≥ 1

Answer 1

@3mar

Answer 2

only 2 kinds of sequences
from thie options this is an AP so either add or subtract the common difference
T(n) = a + (n-1)d
T(1) = a here a = 9

Answer 3

i dont understand